Fix: ‘APC Index Mismatch BSOD Error’ issue on Windows 11/10

This article will show you how to Fix ‘APC Index Mismatch BSOD Error’ issue on Windows 11/10. Some users have said that they recently got a blue screen error with the stop code “APC Index Mismatch” on their Windows PCs. This error could happen at any time, and every time you try to fix it by rebooting, your system will crash. Even though it’s frustrating, if you know what this error means and what causes it, you might be able to fix the problem and save your important data. A Blue Screen of Death (BSOD) error is a major problem with your Windows operating system that forces it to restart.

Most of the time, a BSOD is caused by a software bug, a hardware failure, corrupt or missing software files, or an infection with malware, just to name a few. BSODs can happen at any time and are hard to fix because they have complicated names like “unexpected kernel mode trap” that most users can’t figure out. An APC Index Mismatch Blue Screen of Death error is just as bad, but it usually means that your drivers or hardware are broken. Here’s are the ways to Fix ‘APC Index Mismatch BSOD Error’ issue on Windows 11/10. If you want to know more information about this visit official Microsoft support site.

Update driver automatically

1. Automatically update various drivers with the help of applications that are designed to find, update, and install missing pieces needed for the proper Windows performance.
2. You can try DriverFix and check the machine, so it quickly improves the performance.
3. Damage caused by incorrect driver installations or wrong versions of drivers can lead to various error messages, including BSOD errors like APC_INDEX_MISMATCH and additional issues.
4. This application recommends new drivers, updates outdated ones, and helps make a difference with compatibility issues.
5. You can count on the program and be sure that drivers will get updated and drivers that get installed are compatible with the OS and applications.

Check for system file issues

1. Press “Start” and look for or find “Command Prompt.”
2. Run as administrator.
3. Type in sfc/scannow.
4. Hit Enter.
5. Let the system check to see if any files were changed or broken.

Disable Realtek HD Audio Manager

1. Before the Automatic Repair starts, restart your PC a few times.
2. When Windows starts fixing things, choose Troubleshoot.
3. Then click on Advanced, and then click on Startup Settings.
4. Select Restart.
5. Press F5 or 5 when the system restarts to choose Safe Mode with networking.
6. Once the computer is in Safe Mode, press Ctrl + Alt + Del to open Task Manager.
7. Open the Startup tab and look for the Realtek HD Audio Manager.
8. Right-click on it and choose “Turn off.”

Install latest Windows Updates

1. Go to the settings for Windows.
2. Look for Updates and Security.
3. Click Check for updates after going to Windows Update.
4. Install the most recent version to fix problems.

Remove the DisplayLink driver

If you have more than one monitor, you may need a DisplayLink driver. But Windows experts warn that the APC_INDEX_MISMATCH blue screen could be caused by this particular driver. So, if updating the drivers didn’t work, look for the DisplayLink driver and remove it.

1. Open Apps by pressing the Windows key + I.
2. Click the link on the left that says Programs and Features.
3. Find the software called DisplayLink Core and click on it.
4. Choose to remove.
5. Then look for and download the DisplayLink Installation Cleaner.
6. Run the tool to remove everything, then restart the system.

Update device drivers via Device manager

1. Select Device Manager by right-clicking on the Windows key.
2. Now, look for the device drivers that have a yellow question mark next to them. If none of them have a check mark, try updating your graphics card driver first.
3. Select Update Driver when you right-click on the driver.
4. If that doesn’t work, you can try updating the drivers for the other devices by hand or download a program that will do it for you.

What is an APC Index Mismatch?

Asynchronous Procedure Call (APC) is an abbreviation for a function that runs outside of the main program when certain conditions are met. When something goes wrong with your computer, many blue screen errors point to an APC Index Mismatch. This is why there are so many different things that can cause this error. The APC Index Mismatch error usually means that the number of processes that entered and left an area of operations where a program is running is not the same as the number of processes that left that area.

Because of this, your system has a BSOD crash. This is the operating system’s way of telling you that it can’t run the program without hurting the machine. If you’re having trouble with APC Index Mismatch BSOD crashes, the fixes below might help. Here are some ways that other users who had the same problem have solved it. Please try each solution one by one until you find one that works for your problem.